Positioning Device For Window Frame

ABSTRACT

A positioning device for adjusting a horizontal position of a window frame is disclosed herein, which includes a tube-shaped seat having a chamber defined therein and a limit slot formed on a side wall thereof; a lifting tube, in which an end of the lifting tube is received in the chamber of the seat, a screw is inserted through the limit slot and screwed into a fixing hole on a side wall of the lifting tube, whereby the lifting tube can be fastened on the seat, and a portion of the lifting tube is exposed from a top of the seat; an upper board mounted on the other end of the lifting tube; and an elastic member sleeved into the lifting tube and having both ends respectively pressed against the seat and the upper board.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention generally relates to a positioning device, and inparticular to a positioning device for adjusting a horizontal positionof a window frame.

2. The Prior Arts

Generally, when installing an aluminum window, a window frame must befirstly mounted in an opening on a cement wall. Due to the requirementof a waterproofing work that has to be performed around the aluminumwindow, the opening is usually bigger than the window frame. After thewindow frame is installed, the gap around the window frame is filled up.

When performing the aforementioned window frame installment, thehorizontal state of the window frame must be considered in order toprevent the window from automatically sliding after the window ismounted in the frame. As an example commonly adopted in the prior art, alarge gap under the bottom of the window frame is reserved for adjustingthe horizontal position of the window frame or further installing awaterproof material. A conventional way to adjust the horizontalposition of the window frame is to use a plurality of sets of supportingtubes having their respective predetermined heights, which are placedunder the window frame to support and adjust the window frame byone-by-one replacement of the supporting tubes. The adjustment isaccomplished when the window frame is adjusted to a horizontal state.However, such way is troublesome to operate, and each time whenreplacing the supporting tubes, the window frame must be lifted up,which is very time-consuming and inconvenient.

Thereafter, an adjusting device including a threaded rod and acorresponding sleeve with an inner thread portion is proposed in themarket. During the operation of the adjusting device, the adjustingdevice is disposed under a bottom of the frame with one end of thethreaded rod inserted into the sleeve and engaged with inner threadportion of the sleeve, and the other end of the threaded rod issupported on the cement wall. By rotating the thread rod to move up anddown in the sleeve, the position of the window frame can be adjusted.However, to operate the adjusting device, a rotational force must beapplied on the threaded rod to resist the weight of the window frame,and therefore it is quite laborious and is also inconvenient for theadjustment.

SUMMARY OF THE INVENTION

In order to improve the inconvenience of adjusting a horizontal positionof a window frame, the present invention provides a positioning devicewhich is easy, time-saving and labor-saving for performing thehorizontal position adjustment of the window frame. By the cushion of anelastic member, the height of the window frame can be easily adjustedand thereafter fix the window frame in position through screws.

Based on the above objective, a positioning device for a window frame inaccordance with the present invention comprises a tube-shaped seathaving a chamber defined therein and a limit slot defined on a side wallthereof; a lifting tube, in wherein an end of the lifting tube isreceived in the chamber of the seat, a screw is inserted through thelimit slot and screwed into a fixing hole on a side wall of the liftingtube, whereby the lifting tube can be fastened on the seat, and aportion of the lifting tube is exposed from a top of the seat; an upperboard mounted on the other end of the lifting tube; and an elasticmember sleeved into the lifting tube and having both ends respectivelypressed against the seat and the upper board. Besides, the seat furtherincludes a bottom board disposed at a bottom thereof for stabilizationof the seat, and the upper board may be, but not limited to, an annularshape. The upper board may further have a fixing plate extended from arim thereof for mounted to the window frame.

In installing the window frame, the positioning devices in accordancewith the present invention are placed at two sides of a bottom of thewindow frame, in which the bottom board of the positioning devicecontacts with a cement wall, and the upper board contacts with thebottom of the window frame. Then a horizontal detection device is placedon the frame for aiding to adjust the horizontal position of the windowframe. During the adjustment, along with the use of the horizontaldetection device, the lifting tube can be moved up and down until thewindow frame becomes a horizontal state, and then the screw is screwedinto the fixing hole to fasten the lifting tube onto the seat such thata portion of the lifting tube is exposed from a top of the seat.Furthermore, the present invention is provided with an elastic member,which acts as a cushion, between the bottom board and the upper board.With the elastic member, there is no need to hold the window frame witha certain weight when performing the horizontal position adjustment,which saves a lot of labor. Besides applied on the window frame, thepresent invention also can be applied to adjust a doorframe or a machinetool to a horizontal state or a predetermined angled state. Accordingly,the present invention can be used more widely.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be apparent to those skilled in the art byreading the following detailed description of a preferred embodimentthereof, with reference to the attached drawings, in which:

FIG. 1 is a schematic view showing a positioning device in accordancewith an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a schematic view showing the operation of the positioningdevice in accordance with the present invention;

FIG. 5 is a schematic view showing that the positioning device of thepresent invention is applied to adjust a horizontal position of a windowframe;

FIG. 6 is a schematic view showing a positioning device in accordancewith a second embodiment of the present invention; and

FIG. 7 is a schematic view showing a positioning device in accordancewith a third embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 and 2, a positioning device 1 for a window frame inaccordance with an embodiment of the present invention comprises a seat10, an elastic member 20, a lifting tube 30 and an upper board 40. Thelifting tube 30 is received in the seat 10 and fastened onto the seat 10by a screw 32, and a portion of the lifting tube 30 is exposed from atop of the seat 10, whereby the positioning device 1 can be placed underthe window frame to perform its horizontal position adjustment.

With reference to FIG. 1, the seat 10 in this embodiment is, but notlimited to, a square tubular shape. It may be a round tube or othershapes of tubes. The seat 10 has a chamber 11 defined therein forreceiving the elastic member 20 and the lifting tube 30. A limit slot 12is longitudinally defined on a side wall of the seat 10. A width of thelimit slot 12 is designed to fit with a diameter of a threaded portionof a screw 32, so that the threaded portion of the screw 32 can passthrough the limit slot 12, and thereafter a head of the screw 32 istightened toward the limit slot 12. A length of the limit slot 12 isdesigned to match with the longest distance the lifting tube 30 mayreach. In addition, the limit slot 12 is disposed, but not limited to,in a longitudinal direction; it may also be disposed in a diagonaldirection or in an arc shape. Besides, the seat 10 may further have abottom board 13 provided at a bottom thereof for stabilization. Thestructure of the bottom board 13 has no special limitation and thebottom board 13 may have a slide-proof mechanism formed or mounted at abottom thereof (not shown).

With reference to FIGS. 2 and 3, the elastic member 20 is, but notlimited to, a spring in this embodiment. It also may be a rubber blockor other similar members. The elastic member 20 can be sleevedlydisposed at either inside or outside of the lifting tube 30, and haveboth ends pressed against the bottom board 13 and the upper board 40respectively, so that the lifting tube 30 can go upwardly by a springforce.

The lifting tube 30 may be, but not limited to, a round tube in thisembodiment of the present invention, and other shapes of tubes may alsobe acceptable. A fixing hole 31 is defined on the lifting tube 30 forbeing correspondingly and screwingly engaged with the screw 32.

The upper board 40 is, but not limited to, a square shape. It may be inan annulus shape as shown in FIG. 6. In addition, a fixing sheet 42 mayis further upwardly extended from a rim of the upper board 40 (see FIG.7) for fixing the position device 1 to the window frame E

When assembling the positioning device 1 of the present invention,firstly the elastic member 20 is sleeved into the lifting tube 30, andthen the lifting tube 30 together with the elastic member 20 are placedin the chamber 11 of the seat 10. The screw 32 is inserted through thelimit slot 12 and screwed into the fixing hole 31, whereby the liftingtube 30 is firmly fastened onto the seat 10 by the clamping force of thescrew 32, and a portion of the lifting tube 30 is exposed from the topof the seat 10.

FIGS. 4 and 5 show that the positioning device in accordance with thepresent invention is applied to the horizontal position adjustment ofthe window frame. Two positioning devices 1 are respectively placed attwo sides of a bottom of the window frame F, wherein the upper board 40contacts with the window frame F and the bottom board 13 contacts with acement wall C. A horizontal detection device (not shown) is placed onthe window frame F for aiding to adjust the horizontal position of thewindow frame F. When the upper board 40 is further provided with thefixing sheet 42, the upper board 40 can be fixed to the window frame Fby fastening the fixing sheet 42 on the window frame F via screws (seeFIG. 7) to prevent the positioning device 1 from sliding. When adjustingthe horizontal position of the window frame F, the screw 32 has to beloosened in advance, such that then the lifting tube 30 can be adjustedup and down until the window frame F becomes a horizontal state. Thenthe screw 32 is fastened into the fixing hole 31 to make sure that thelifting tube 30 is clamped tightly to the seat 10. In addition, thepresent invention is equipped with an elastic member 20 which may act asa cushion between the bottom board 13 and the upper board 40. Therefore,there is no need to hold the window frame F with a certain weight whenthe adjustment is performed, which can save a lot of labor.

Although the present invention has been described with reference to thepreferred embodiment thereof, it is apparent to those skilled in the artthat a variety of modifications and changes may be made withoutdeparting from the scope of the present invention which is intended tobe defined by the appended claims.

1. A positioning device for a window frame, comprising: a tube-shapedseat having a chamber defined therein and a limit slot defined on a sidewall thereof; a lifting tube, in which an end of the lifting tube isreceived in the chamber of the seat, a screw is inserted through thelimit slot and screwed into a fixing hole on a side wall of the liftingtube, whereby the lifting tube is fastened on the seat, and a portion ofthe lifting tube is exposed from a top of the seat; an upper boardmounted on the other end of the lifting tube; and an elastic membersleeved into the lifting tube and having two ends respectively pressedagainst the seat and the upper board.
 2. The positioning device asclaimed in claim 1, wherein the seat further includes a bottom boarddisposed at a bottom thereof.
 3. The positioning device as claimed inclaim 1, wherein the upper board is an annular shape.
 4. The positioningdevice as claimed in claim 1, wherein a fixing plate is upwardlyextended from a rim of the upper board.
 5. The positioning device asclaimed in claim 1, wherein the elastic member is a spring.
 6. Thepositioning device as claimed in claim 1, wherein the elastic member isa rubber block.